Does compressing a video reduce quality?

Our smart compression minimizes visible quality loss. The Light preset (80% quality) is virtually indistinguishable from the original for most content. Medium and Heavy presets trade more quality for smaller files.

Is my video uploaded to a server?

No. Your video is processed entirely in your browser using WebCodecs technology. The file never leaves your device, making this the most private video compressor available.

What is the maximum file size I can compress?

There is no file size limit from our side. Since processing happens on your device, the only constraint is your computer's available memory. Most modern devices can handle files up to 2-4GB without issues.

Which video formats are supported?

MP4, MOV, AVI, WebM, and MKV input files are supported. The output is always MP4 (H.264) for maximum compatibility across all devices and platforms.

How do I compress a video for Discord?

Select the Discord preset which automatically targets an 8MB file size — the maximum Discord allows for free users. The compressor calculates the optimal bitrate based on your video's duration to hit that target.

Free Tool

Compress Video Online — Free, No Watermark

Reduce file size while preserving visual quality. Your video never leaves your browser.

No UploadNo Watermark100% PrivateFree Forever

Drag & drop your video or click to browse

Supports MP4, MOV, AVI, WebM, MKV

No Server Upload No Watermark 100% Private Free Forever

How to Compress a Video Online

Upload Your Video

Drag and drop any video file (MP4, MOV, AVI, WebM). No file size limit — processing happens on your device.

Choose Compression Settings

Select a quality preset (Light, Medium, Heavy) or choose a platform preset like Discord (8MB) or Email (25MB).

Download Compressed Video

Your compressed video is ready instantly. No watermark is added. Click download to save.

Why Use Our Video Compressor?

Client-Side Processing

Your video is compressed in your browser using WebCodecs. Nothing is uploaded to any server. This is faster, more private, and works even on slow internet.

No Watermark, Ever

Unlike other tools, we don't stamp watermarks on your exports. Free means genuinely free.

Platform Presets

One-click presets for Discord (8MB), Email (25MB), WhatsApp (16MB), and more. Hit the exact file size you need without guessing bitrate settings.

Compress Video for Any Platform

Frequently Asked Questions

Need more than compression? Our full video editor has keyframes, animations, captions, and AI tools.

Try the Editor

Our free online video compressor uses modern WebCodecs technology to reduce video file sizes directly in your web browser. Unlike traditional online video compressors that upload your files to remote servers, our tool processes everything locally on your device. This means your videos remain completely private — they never leave your computer. The compressor supports all major video formats including MP4, MOV, AVI, WebM, and MKV, and outputs universally compatible MP4 files encoded with H.264. Whether you need to compress a video for Discord's 8MB file limit, shrink a video for email attachment, or reduce file size for faster uploading to social media platforms like TikTok, Instagram, and YouTube, our platform preset buttons calculate the optimal bitrate automatically. The compression algorithm balances file size reduction with visual quality preservation, offering three quality levels to suit your needs. Light compression preserves roughly 80% of the original quality and is ideal for sharing videos where visual fidelity matters. Medium compression achieves a good balance between size and quality for most everyday use cases. Heavy compression maximizes file size reduction for situations where smaller files are the priority, such as sending videos over limited bandwidth connections or meeting strict platform upload limits.